amphisbaena /æmfɪsˈbiːnə/ noun2 •A mythical serpent having a head at each end of its body, able to move in either direction.1971: What do you call that animal that goes backward and forward, head at each end? —'Amphisbaena'. A kind of lizard. It doesn't exist. — Anthony Burgess, M/F (Penguin 2004, p. 109) — 1971 •A member of a genus of lizards, native to the Americas, having extremities which are very similar. formsamphisbaenae · amphisbaenas